AERCO BMK 1.5 LN Dual Fuel June 2010 - Manual (Page 55)

SAFETY DEVICE TESTING
6-7
6.13 IGNITION SWITCH OPEN DURING
IGNITION
The Ignition Switch (and the Purge Switch) is
located on the Air/Fuel Valve. To check the
switch, proceed as follows:
17
2 17
1
16
9
17
0
1. Set the unit’s ON/OFF switch to the OFF
position.
2. Place the unit in Manual Mode and set the
valve position between 25% and 30%.
3. Remove the Air/Fuel Valve cover (Figure
6-5) by rotating the cover counterclockwise
to unlock and lift up to remove.
4. Remove one of the two wires (#169 or #170)
from the Ignition Switch (Figure 6-6).
5. Initiate a unit start sequence.
6. The unit should begin it’s start sequence
and then shut down and display IGN
SWITCH OPEN DURING IGNITION.
Figure 6-6
Air/Fuel Valve Purge and Ignition Switch
Locations
7. Replace the wire on the Ignition Switch and
press the CLEAR button. The unit should
restart.
AIR/FUEL VALVE COVER
(ROTATE CCW TO REMOVE)
6.14 SAFETY PRESSURE RELIEF
VALVE TEST
Test the Safety Pressure Relief Valve in
accordance with ASME Boiler and Pressure
Vessel Code, Section VI.
Figure 6-5
Air/Fuel Valve Cover Location